Monitor Cutting Out

Ok, I'm mystified by this one. I have a client with an AOC 17" monitor on a P2 computer. The problem is, periodically the monitor will lose video (the power light stays green, it does not go into sleep mode). I've tried using a different monitor, as well as a different video card, and neither solved the problem. There is another system with identical configuration on site, and it has no problems, so I know it is not a hardware conflict. Usually when the video cuts out, it does it when they print from the workstation, and lasts for 15-20 minutes before the monitor comes back on. Any ideas what could be causing this?

When it goes out, does it do so all at once or a slow fade. Same for comming back on. Can you hear the flyback running (high pitched squeal - not everyone can hear it)? This woudl indicate loss of sync or somesuch. Is there any blooming?

Have you checked powersave mode in the BIOS?

Get a powerline polarity test gizzy. Check to see that you don't have a floating neutral or somesuch in the AC.

Ok, problem number 2, I haven't actually witnessed the problem, I just get a call from the client about once a week to tell me that whatever I tried last didn't work. I'll see if I can get some more information from them.

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The problem is from the ATX case and the motherboard...What kind of case are you using and brand Motherboard?
Epox has a fix for this problem with thier boards and certain cases on thier web site.
i dont know why it does it but something to do with the ATX and power features.

How to fix display issue, screen flickering issue when I plug in
power cord to the machine.
Before I start explaining the solution lets check out once the issue how it looks like
after I connect the power cord. most of you also have faced this…